NandFiler
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NandFiler is a save management tool that comes bundled with the TwlSDK and the SystemUpdater application. Included are options to backup/restore saves, and to edit files in a hex editor. The hex editor can be used for "cheating" for a test, and manual save file corruption. Developers are required by lotcheck tests to make sure their DSiWare can detect and handle damaged saves, so NandFiler is extremely important.
Screenshots
What NandFiler looks like when you start it up.
Highlighting a random file from Flipnote Studio that was stored somewhere on the NAND.
The hex editor itself.
The hex editor again, now with on-screen instructions by pressing SELECT.
NandFiler backing up a folder from an application. The folder gets extracted as a file to the SD Card.
The Export and 'Fill' options, which can only be used on things stored on the SD Card.
